Hibernate xml mapping:

Getting started basic hibernate example to insert a record to Mysql database.

This example contains,

1. Hibernate configuration file (hibernate.cfg.xml)
2. Hibernate mapping file (Student.hbm.xml)
3. POJO class (Student.java)
4. Main Program (AddStudent.java)

Hibernate Configuration file

Hibernate.cfg.xml

<!DOCTYPE hibernate-configuration PUBLIC 
  "-//Hibernate/Hibernate Configuration DTD//EN"
  "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory name="student1Factory">
    <property name="connection.driver_class">
      com.mysql.jdbc.Driver
    </property>
    <property name="connection.url">
      jdbc:mysql://localhost:3306/test
    </property>
    <property name="connection.username">
      root
    </property>
    <property name="connection.password">
      root
    </property>
    <property name="connection.pool_size">5</property>
    <!-- SQL dialect -->
    <property name="dialect">
      org.hibernate.dialect.MySQLDialect
    </property>
    <!-- Echo all executed SQL to stdout -->
    <property name="show_sql">true</property>
    <property name="hbm2ddl.auto">update</property>
    <mapping resource="Student.hbm.xml" />
  </session-factory>
</hibernate-configuration>

Hibernate Mapping

Student.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
  "-//Hibernate/Hibernate Mapping DTD//EN"
  "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
  <class name="com.candidjava.hibernate.sample.Student" table="users">
    <id name="id" column="sid">
      <generator class="increment" />
    </id>
    <property name="name" column="sname" not-null="true" />
    <property name="degree" column="degree" />
    <property name="phone" column="mobile" unique="true" />
    <property name="email" column="priEmail" />
  </class>
</hibernate-mapping>

POJO Class

Student.java

package com.candidjava.hibernate.sample;
 
import java.io.Serializable;
 
public class Student implements Serializable {
  private long id;
  private String name;
  private String degree;
  private String phone;
  private String email;
 
  public long getId() {
    return id;
  }
 
  public void setId(long id) {
    this.id = id;
  }
 
  public String getName() {
    return name;
  }
 
  public void setName(String name) {
    this.name = name;
  }
 
  public String getDegree() {
    return degree;
  }
 
  public void setDegree(String degree) {
    this.degree = degree;
  }
 
  public String getPhone() {
    return phone;
  }
 
  public void setPhone(String phone) {
    this.phone = phone;
  }
 
  public String getEmail() {
    return email;
  }
 
  public void setEmail(String email) {
    this.email = email;
  }
}

Main Class

AddStudent.java

package com.candidjava.hibernate.sample;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
public class AddStudent {
  public static void main(String args[]) throws Exception {
    String name = "Candidjava";
    String degree = "MS";
    String phone = "098776544";
    String email = "candid@candidjava.com";
    Student s1 = new Student();
    s1.setDegree(degree);
    s1.setEmail(email);
    s1.setName(name);
    s1.setPhone(phone);
    try {
      SessionFactory sessionFactory = new Configuration().configure(
          "/hibernate.cfg.xml").buildSessionFactory();
      Session s = sessionFactory.openSession();
      Transaction tx = s.beginTransaction();
      s.save(s1);
      tx.commit();
      s.close();
    } catch (Exception e) {
      System.out.println(e.getMessage());
      System.err.println("Initial SessionFactory creation failed." + e);
    }
    System.out.println("Added to Database");
  }// end of method
}// end of class

Download Example

Sample xml based war

Sample xml based zip